Multiple punch and eyeleter



Nov. 28, 1961 J. D. BEASLEY ETAL 3,010,597

MULTIPLE PUNCH AND EYELETER Filed Jan. 9, 1957 6 Sheets-Sheet 1 H 4+- dose 06 Z7. BeaJ/ey /V0e/ M. Campbell /76 INVENTORS Nov. 28, 1961 J. D. BEASLEY ET'AL 3,010,597

MULTIPLE PUNCH AND EYELETER Filed Jan. 9, 1957 6 SheetsSheet 2 /l 0e/ M. Campbel/ INVENTORS ATTORNEKS Nov. 28', 1961 J. D. BEASLEY ETAL 3,010,597

MULTIPLE PUNCH AND EYELETER Filed Jan. 9, 1957 6 Sheets-Sheet 3 doJe a/r fl. fleas/6y Noe/ M. Campbefl INVENT RS rm/awe y:

Nov. 28, 1961 J. D. BEASLEY ET'AL 3,010,597

MULTIPLE PUNCH AND EYELETER Filed Jan. 9, 1957 s Sheets-Sheet 4 Nov. 28, 1961 J. D. BEASLEY ETAL 3,010,597

MULTIPLE PUNCH AND EYELETER Filed Jan. 9, 1957 6 Sheets-Sheet 5 A/ae/ M. (a/77,069

INVENTORJ Nav. 28, 1961 Filed Jan. 9, 1957 J. D. BEASLEY ETAL MULTIPLE PUNCH AND EYEILETER 6 Sheets-Sheet 6 dose 0b fl. Beau/9y /V0e/ M CompbeV/ INVENTORJ ATTORNEVJ United States Patent O 3,010,597 MULTIPLE PUNCH AND EYELETER Joseph D. Beasley and Noel M. Campbell, Houston, Tex., assignors to Arthur Andersen & Co., Chicago, 111., a partnership Filed Jan. 9, 1957, Ser. No. 633,201 11 Claims. (Cl. 218-.5)

This invention relates to multiple punch and eyeleters and more particularly to such an apparatus which is electrically powered and controlled and designed principally for use in binding reports and other written material.

' Many business concerns use eyeleting machines to bind reports and other papers and commonly available and in use for such binding are single hand operated eyeleters such as the Automatic Bates Eyeleter described in Patent No. 1,174,948 granted March 7, 1916 to Louis Myers for Eyeleting Machine and manufactured by The Bates Manufacturing Company of Orange, New Jersey. However, as most documents require more than one eyeleter to bind them and many business concerns such as accounting offices and the like have a considerable amount of binding that they must do, the use of such single eyeleting machines is excessively labor and time consuming and therefore expensive. Further, with the use of eyeleters it is normally necessary that the paper being bound by the eyeleter be first punched and here again the use of conventional oflice punches is time-consuming.

It is therefore a general object of the present invention to provide a multiple punch and eyeleter apparatus having a punch gang and an eyeleter gang electrically controlled and powered which apparatus is simple to operate and dependable in use.

A further object is to provide such an apparatus having automatic means stopping the punch gang and eyeleter gang after each cycle of operation.

As the Automatic Bates Eyeleter referred to above is readily available on the market, it is another purpose of the present invention to provide a multiple eyeleter designed especially to incorporate the -Automatic Bates Eyeleter although similar eyeleters may also be used.

Another object of the present invention is to provide a multiple eyeleter in which any one of the individual eyeleters may be operated individually and conveniently by hand in the event of failure of the individual eyeleter to place an eyelet in the material being bound.

And yet a further object of the present invention is to provide a power operated multiple eyeleter including automatic means compensating the eyeleting operation for different thicknesses of paper being bound.

As the individual eyeleters used in the eyeleter gang require for their best operation a relatively fast cocking stroke compared to the eyelet setting stroke it is a still further object of the present invention to provide linkage which will cause such movement.

Other objects and advantages will be more apparent from the following description of a preferred example of the invention, given for the purpose of disclosure and taken in conjunction with the accompanying drawings, where like character references refer to like parts throughout the several views, and where FIGURE 1 is a front elevation of the apparatus of the present invention,

FIGURE 2 is an end vlew along the line 2-2 of FIG- URE 1,

FIGURE 3 is a plan view along the line 36 of FIG- URE 2.

FIGURE 4 is an elevational view along the line 44 of FIGURE 3,

FIGURE 5 is a view along the line 5-5 of FIGURE 4,

FIGURE 3, i

from the punch motor 16 connected by the flexible cou- ICC FIGURE 7 is a fractional enlarged view of a timing disc and pressure switch,

FIGURE 8 is a fragmentary cross-sectional view of papers bound by an eyelet,

FIGURE 9 is a cross sectional view along line 9-49 of FIGURE 4,

FIGURE 10 is a view along the line 1010 of FIG- URE 9,

FIGURE 11 is a View along the line 1111 of FIG- URE 4,

FIGURES 12, 13, 14, and 15 are fragmentary end views of a portion of the free wheeling clutch of the eyeleter assembly illustrating this free wheeling clutch in various positions,

FIGURE 16 is a fragmentary view of the latch of the free wheeling clutch, and

FIGURE 17 is a diagrammatic sketch of a satisfactory wiring diagram.

Referring to the drawings and particularly to FIGURE 4, the apparatus as a whole includes the punch assembly indicated generally by the numeral 111 and an eyeleter assembly indicated generally by the numeral 12 both mounted in and on a suitable cabinet 14.

The punch assembly 10 (FIGURES 4, 9 and 10) includes the electric punch motor 16 driving a punch speed reduction unit 18 operating punch linkage indicated generally by the numeral 20 connected to and operating the punch gang 22. Thepunch gang 22 includes a plurality of punches 24 here shown to be four in number although any convenient number may be used. The individual punches 24 in the punch gang 22 are secured on the top of the cabinet 14 such as by brackets 26 (FIGURE 9) bolted to the top of the cabinet 14. Each punch 24 includes a housing 28 in which reciprocates a conventional punch plunger 30 responsive to vertical reciprocating movement of the actuating arm 32 of the punch 24 so that downward movement of the actuating arm 32 lowers the punch plunger 30 causing perforation of any paper placed in the feed slot 34 ahead of the punch plunger 32.

The punches 24 are operated in unison through connecting rods 36 pivotally connected to the free end of each actuating arm 3-2 by a clevis 38. The lower end of each connecting rod 36 is pivotally connected by a clevis 40 to a rocker arm 42 rigidly connected to a horizontal rock shaft 44 (FIGURES 4 and 10). As constructed, oscillating movement of the rock shaft 44 moves each rocker arm 42 thereby reciprocating vertically each connecting rod 36 resulting inthe operation in unison of the punches 24.

Oscillating movement is imparted to the rock shaft 44 pling 46 (FIGURE 4) to the drive shaft 48 of the punch speed reduction unit 18 which has a reduced speed driven shaft 50 extending therefrom. Fixedly mounted on the end of the driven shaft 50 is a flange 52 secured such as by bolts 54 to a crank disc 56. Eccentrically mounted on the crank disc 56 is the pitman arm 58 which is pivotally connected at its upper end to the drive rocker arm 61) (see FIGURE 10) such as by the clevis 62 on one end of this drive rocker arm '60. The other end of the drive rocker arm 60 is rigidly secured to the rock shaft 44. Thus rotation of the crank disc 56 by the motor 16 transmits oscillatory motion to the rock shaft 44 by means of the pitmanarm '58 and the drive rocker arm 60.

Any electric motor 16 giving the desired horsepower may be utilized such as a General Electric one-half horsepower volt 5KC43MG3. Likewise numerous commercial speed reduction units 18 may be utilized such as the model TW121 reduction gear unit manufactured by Boston Gear Works, Quincy 71, Massachusetts. Such motors and speed reduction units are commercially availa 3 able and no further explanation or description of them is either necessary or appropriate.

To mount the punch motor 16, the speed reduction unit I 18 and the linkage 20 in the cabinet 14, the motor 16 and speed reduction unit 18 are secured on the lower portion of a metal framework 64 which is suspended from the top of the cabinet 14 by a plurality of posts 66. A pair of framework 64 rotatably secure the rock shaft 44 in position.

The eyeleter assembly 12 includes the eyeleter electric motor 70 driving an eyeleter speed reduction unit 72 op erating eyeleter linkage indicated generally by the numetal 74 connected to and operating the eyeleter gang 76. The eyeleter gang 76 includes a plurality ofeyeleters 78 of the same number as there are punches 24. The intlividual eyeleters 78 are secured to the top of the cabinet 14 such as by bolts 79 (FIGURE 6) through their bases 81 into the top of the cabinet 14. These individual eyejournal'boxes 68 mounted on the top of the rectangular 80 removes the plunger 86 from the crimped eyelet and permits the paper to be withdrawn from the eyeleter 78. A supply of'eyelets is maintained in a magazine 88 and are fed to the plunger 86 along the concave race 90. This eyeleter 78 is fully described in Patent No. 1,174,948 granted March 7, 1916 to Louis Myers for Eyeleting-Machineand is commercially available on the market. No further description thereof is deemed necessary.

The eyeleters 78 are operated in unison and downward movement is imparted to the actuating levers 80 (FIGURES 4, 5 and 6) by flexible cables 92 pivotally secured at the upper end by a clevis 94 to a bolt 96 extending through the free end of the actuating lever 80 which bolt 96 is held in place by nuts, 98. Each cable 92 extends downwardly through a hole 100 in the top pitman arm 108 being eccentrically mounted on the free; wheeling clutch assembly 110 (more fully described later herein) driven by the electric motor 70 through the speed reduction unit 72.

With varying thicknesses of paperinto which eyelets 82 are crimped the extent of downward movement of the crimping plungers 86 of the eyeleters 78. must. vary. That is with thicker papers the plungers 86 move downward toward the anvils 84 a lesser distance than with thinner paper. As the amount of downward movement of the plunger 86 is controlled by the movement of the actuating lever 80 some means must be provided to automatically adjust the functioning of the eyeleters 78 to varying thicknmses of paper. This is accomplished through the resilient coupling 104 which includes a cylindrical housing 112 made up by threading the upper portion 114 to the lower portion 116. In the upper part of the housing 112 is a resilient bushing 118 of rubber although other suitable resilient material may be used. In the lower part of the housing 112 is a slidable disc 120 having centrally secured thereon an upwardly projecting rod 122 slidably extending through the bushing .118 and housing 112 and secured at its upper end to the lower end 7 4, of the cable 92. A threaded stud 124 made integral with the lower portion 116 of the housing 112 is adjustably secured to the clevis 107 by an adjusting nut 126. As thus constructed, upon downward movement of the bar 106 the housing 112 will bear against the resilient bushing 118 which will compress to take care of various thicknesses of paper inserted. in the eyeleters 78. V

In operation of an eyeleter 78 it was found that at least the latter portion of the upward movement'of the actuating lever 89, which upward movement is the cocking stroke of the eyeleter 78, should be fast enough to cause the actuating lever to jar the eyeleter 78 whichspeed is faster than the desired speed for the crimping stroke of the eyeleter, that is the downward movement of the actuating'lever 80, otherwise there sometimes occurred a failure of the eyelets 82 to feed to the plunger 86. The

free wheeling clutch mechanism 110 provides a means to cally fastened. Rotational movement is transmitted from the drive plate 134 to the driven plate 136 in the manner best illustrated in FIGURES 12 through 15 which are fragmentary views of the upper portion of the driven plate 136 looking through the drive plate 134. Mounted on the side of the driven plate 136 between the driven plate .136 and the drive plate 134 is a driven block 138 preferably adjacent the point of connection'of the pitman am 108 to the driven plate .136. Secured to the side of the drive plate 134 and adapted to contact the driven block 138 are the drive block 140 and the stop block 142 preferably spaced approximately degrees apart. Located on the drive plate 134 near-its periphery and ahead ofv the drive block 140 is the pivotally mounted latch 144. This latch 144 has a toe'146 adapted to bear against the lead side of the driven block 138 when the drive block 140 contacts the 'driven block 138 as illustrated in FIGURE 13. Opposite the toe 146 is a convex cam surface 148 on the heel 149 of the latch 144 which cam surface 148 projects beyond the periphery of the drive wheel 134 when the latch 144 engages the driven block 138. As best illustrated in FIGURE 16 the latch 144 is spring loaded by the. spring 150- secured to the pivot 152 and to a pin 153 onthe toe side of the latch 144 andto a pin 154 projecting from the heel of the latch 144 toward the drive plate 134. As thus constructed this spring150 constantly urges the toe 146 downward. Toprevent the toe 146 from moving downwardly past the driven block 138 a slot 156 is milled in the drive plate 134 into which slot 156 the pin 154 projects. Upward'movement of the heel 149 and consequently downward movement of the toe 146 past the position illustrated in FIGURE 13 is prevented by pin 154 striking the upper end of the slot 156.

Referring now to FIGURE 12 there is illustrated the free-wheeling clutch with the eyeleter assembly 12 in the positionillustrated in FIGURE 4, that is with the eyeleters 78 open and cocked. When rotation of the drive plate 134 in the direction of the arrows begins the driven plate 138 remains stationary until the drive block contacts the driven block 138 as illustrated inFIGURE 13 at which time the toe 146 of the spring loaded latch 144 moves downward into position immediately ahead of and engaging the driven block 138. Continued rotation of the drive plate 134c'auses rotation of. the driven plate 136 through contact of the drive block140 against the driven block 138 which continues until clutch 110 has rotated approximately 270 degrees to the position illustrated in FIGURE 14. At this position the drive block 140 is no longer driving the driven block 138 because the .tension spring 151 (see FIGURE 4) connected between the bar 106 and the upper part of the cabinet 14 has been extended and is urging the pitman arm 108 upwardly tending to pull the driven block 138 ahead of the drive block 140. However, prior to this position the latch 144 holds the driven block 138 in position against the drive block 140 preventing the driven plate 136 from moving faster than the drive plate 134. When the drive plate 134 reaches the position illustrated in FIGURE 14 the cam surface 148 on the latch 144 contacts the trip arm 159 (see FIGURE 14) depressing the heel of the latch 144 releasing the driven block 138 from the latch 144 allowing the tension of the spring 151 to pull the driven plate 136 ahead of the drive plate 134 effecting a free wheeling motion of the driven plate 136. At the time the latch 1441s released from the driven block 138 the stop block 142 is at approximately the top of the drive wheel 134 and prevents movement of the driven block 138 past the vertical position as illustrated in FIGURE 15 until the stop block 142 advances. This free wheeling of the driven plate 136 from the position illustrated in FIGURE 14 to that illustrated in FIGURE 15, and the action of the spring 151 imparts a rapid upward movement to the cables 92 allowing the spring loaded actuating levers 80 of the eyeleters 78 to move upward freelyand to jolt the machine thereby aiding in the feeding of the eyelets 82 to the plungers 86.

The eyeleter motor 70 may be any suitable motor such as'an identical to the punch motor 16 and is connected to the drive shaft 157 of the speed reduction unit 72 by a flexible coupling 158 in the same manner as the punch motor 16 is connected to its speed reduction unit 18. The speed reduction unit 72 of the eyeleter assembly 12 may be any conventional speed reduction unit such as reduction gear box model LW21 manufactured by Boston Gear Works, Quincy 71, Massachusetts. This motor 70 and gear reduction unit 72 are secured such as by bolts, not shown, to the floor of the cabinet 14.

Mounted on the top of the cabinet 14 and tilted toward the guide slot 34 of the punches 24 and toward the top of the anvil 84 of the eyeleters 78 is a guide plate 160 to assist in feeding papers into the punch gang 22 and the eyeleter gang 76. Adjustable side guides 162 are provided on the guide plate 160 at the left end of the punch gang 22 and at the left end of the eyeleter gang 76 as viewed in FIGURES 1 and 4. These adjustable side guides 162 include a hinged stop 164 secured to a base 166 so that either the hinged stop 164 or the base 166 may be used as the side guides depending upon the size of documents being eyeletedQ As illustrated in FIG- URE 3, stops 168 are mounted on cabinet 14 between the punches 24 and stops 170 are likewise mounted between the eyeleters 78 to stop forward movement of papers at the desired position. A pressure switch 172 is located on top of cabinet 14 between the punches 24 in such a position that it is contacted and closed by paper fed into the punch gang 22, and likewise a pressure switch 174 is located between the eyeleters 78 and adapted to be contacted and closed by paper fed into the eyeleter gang 76. Extending from the bottom of the cabinet 14 (FIGURES 1 and 2) is a foot pressure switch 176.

In operation, papers to be eyeleted are first fed into the punch gang 22 where they close the pressure switch 172. The operator then steps on the foot switch 176 which causes a single rotation of the crank disc 56 of the punch assembly whereupon the punch gang 22 punches holes in the paper and stops in open position. The papers are then removed from the punch gang 22 and fed into the eyeleter gang 76 closing the pressure switch 174 whereupon the operator again steps on the foot switch 176 causing a single rotation of the free wheeling clutch 110 thereby crimping the eyelets 82 and binding the paper.

Timing means 177 to de-energize the punch motor 16 upon a single revolution of the crank plate 56 is best contact plungerlSS, but upon the wheel 180 being forced into the notch 186, as shown in FIGURE 7, the spring loaded arm 182 releases the contact plunger 185 and opens the timer switch 184 thereby de-energizing the motor 16. Thus once during every revolution of the timing disc 178 and hence of the crank plate 56 the timer switch 184 is open and the motor de-energized. A similar timing means 187 (FIGURE 4), including a notched timing disc 17-8' mounted on the driven shaft 128 from the speed reduction unit 72 and a timer switch 184, is located in the eyeleter assembly 12.

To prevent any coasting of the motors 16 and 70 past the open position of the punch gang 22 or the eyeleter gang 76 respectively when the timing means de-energizes these motors each motor is equipped with a solenoid brake preventing further rotation of each motor after it is de-energized.

As best illustrated in FIGURES 4 and 9 the solenoid brake of the punch assembly 10 indicated generally by the numeral 188 includes an upper brake shoe 189 and a lower brake shoe 190 both suitably lined and mounted adjacent opposite sides of a brake drum 191 secured to the drive shaft 192 of the motor 16. The left end of each brake shoe 189 and 190 as viewed in FIGURE 9 is pivotally secured to a vertical post 193. The opposite ends of the brake shoes 189 and 190 each have horizontal extensions 194 and 195 respectively through openings in the free ends of which extends the vertical spring rod 196. Mounted above the upper extension 194 and below the lower extension 195 and on the spring rod 196 are compression springs 197 and 198 respectively urging the extensions 194 and 195 toward each other thereby tending to engage the brake shoes with the brake drum.

To release the brake shoes 189 and 190 from the brake drum 191 a solenoid 200 is mounted between the brake shoe extensions 194 and 195 with its base secured to the lower brake shoe extension 195 and its plunger 202 connected to the upper brake shoe extension 194. As thus arranged, energization of the solenoid 200 extends its plunger 202 forcing the brake shoe extensions 194 and 195 apart releasing the brake shoes 189 and 190 from the brake drum 191 while de-energization' of the solenoid .200 permits the compression springs 197 and 198 to engage the brake shoes 189 and 190 with the brake drum 191. To overcome the weight of the upper brake shoe 189 when the solenoid 200'is energized and thus make certain that both brake shoes 189 and 190 are removed from the brake drum 191 a compression spring 204 exerting less compressive force than the upper compression spring 197 is adjustably mounted on the spring rod 196 below the upper brake shoe extension 194 assisting in the lifting of this upper brake shoe extension 194 at the time -12 as previously described is illustrated in FIGURE 17 where as shown each motor 16 and 70 has a power circuit, a main control circuit, and an auxiliary control circuit, with both main control circuits operating through the single foot switch 176. A source of suitable power is supplied to the punch motor 16 from power leads 210 and 211 through a power-lead switch 208 and a contact 212 in the magnetic starter 214. This circuit just described is the power circuit for the punch motor 1 6.

The contact 212 is a normally open contact. To

' close the contact 212 the contact solenoid 216 in the magthe contact solenoid 216 is connected to the power lead 210. Thus, depressing the foot switch while paper is in the punch gang 22 far enough to close the pressure switch 172 operates the magnetic starter 214 by causing solenoid 216 to'close the contact 212 thereby energizing the motor 16. The timer switch 184, in an auxiliary control circuit operated by the timer disc 178, is an interlocking switch which keeps the contact 212 closed until] the gang punch 22 reaches the open position, this auxiliary control being desirable since the foot switch 176 is closed onlywhen it is depressed and it is normally depressed only until switch 184 is closed. The timer switch 184 is in the auxiliary control circuit and is electrically connected to thepower lead 211 through leads 213 and 215 and is connected by lead 217 to the contact solenoid 216 and through the contact solenoid 216 to the other 'powerlead 210; The timer switch 184 is open only switch 184 is closed so that even though foot switch 176 is opened by removal of the operators foot the contact solenoid 216 is still energized, thereby continuing power to the motor 16 until the notch 186 on the timer disc 178 again reaches the switch 184 and opens it thereby deenergizing contact solenoid 216'and opening the contact 212 de-energizing the motor 16.

The foot switch 176, the pressure switch 172, the contact solenoid 216 and the leads connected to them'comprise the main control circuit 'for the punch motor 16.

' As shown 'by FIGURE 17 the solenoid 200 of the solenoid brake 188 is connected across the leads to the motor'16 coming out of the magnetic starter 214 so that the solenoid 200 is'energize'd when the motor is energized thus. releasing the solenoid brake 188 while the motor 16 is running, and de-energization of the'motor 16 deenergizes the solenoid 200 thereby causing engagement of the solenoid brake 188. i

The eyeleter assembly 12 is electrically powered and controlled identically to the punch assembly utilizing its pressure switch 174 between the eyeleters 78 instead of the pressure switch'172iof the punch assembly 10. Like parts for the eyeleter circuit are given the same numbers primed as the punch circuit. a

The magnetic starters 214 and 214' are commercial units readily available on the market such as magnetic motor starter model BGl, size 0, 11.0. volts 60 cycles A.C. manufactured by Square D- 00., 4041 N- Richards, Milwaukee, Wisconsin, and no further description of them'is necessary ,or appropriate. Likewise many foot switches suitable for use as the pressure foot switch 176 are commercially available such as the General Electric foot switch model 20-200 and no further description of it is necessary or appropriate.

In operation, the power-lead switch 208 is closed and so remains during operation of the machine. With switch 208 closed a document to be eyeleted is placed on the guide plate 160 in front of the punch gang 22 with the left end of the. document resting against base 166 or hinged stop 164 of its side guide 162. The document is then pushed forward into the feed slots 34 of the'group of punches 24 until stopped by the punch stops 168. In such position the document contacts and closes thepressure switch 172.

notch 186 in the timer disc 178 mounted on the-driven At this time the wheel 180 on the spring loaded arm 182 of the timer switch 184 is in the shaft 50 or the speed reduction unit 18 (FIGURE 7 and hence the timerpswitch 184 is open. The operator then steps on the foot switch 176 and keeps it there until the switch 184 is closed, thus energizingthe contact solenoid 216 in the magnetic starter 214 thereby closing the contact 212 of the power circuit to the punch motor 16. This energizes the motor 16 and the solenoid 200 of the solenoid brake 188 whereby the solenoid brake 188 is released and the motor 16 is started. Rotary motion from the punch motor 16 is transmitted through the punch speed reduction unit 18 and is converted to reciprocating motion by the punch linkage 20 causing the punch gang 22 to begin a cycle of operation. Starting the punch motor 16 initiates rotation'of the timer disc 178 bringing the unnotched portion of the'timer disc 17am contact with the wheel 180 on the arm 182 of the timer switch 184 thereby closing this switch 184.

As previously described, the timer switch 184 is an interlocking switch which when closed keeps the contact solenoid 216 energized and the contact 212 closed thereby keeping the power circuit to the punch motor 16 closed even after the foot switch 176 is opened since the foot switch 176 is closed only when it is depressed and it is normally held depressed only until the switch 184 is closed. Closing the timer switch 184 keeps the punch motor 16 energized because the timer switch 184 is electrically connected to the power branch lead 213 through lead 215 and to one side of the contact solenoid 216 through the lead 217 and is in parallel with the foot switch 176 and the pressure switch 172. This provides an electrical interlock to the contact solenoid 216 when the foot switch 176 is opened after having been closed.

With the timer switch 184 closedthe punch gang 22 continues through its cycle, punching holes in the document, and stops with the punch gang 22 open. The punch gang 22 stops at the end of one complete cycle of the punch gang 22 because at that time the timer disc 178 has made one complete revolution bringing the notch 186 in the timer disc 178 against the wheel 180 on the spring loaded arm 182 of the timer switch 184 thereby opening the timer switch 184. This opening of the timer switch 184 de-energizes the contact solenoid 216 if the foot switch 176, as is the usual case, has been opened by removal of the operators foot prior to this time. De-energizing the contact solenoid 216 opens the contact 212 and de-energizes the punch motor 16 stopping movement of the punch gang 22. Simultaneously with the de-energization of the punch motor 16 by the opening of the contact 212 the same opening of the contact 212 de-energizes the solenoid 200 of the solenoid brake 188 causing the solenoid brake 188 to stop further move ment of the drive shaft 192 of the punch motor 16 and hence of the punch gang 22. V

The document is then removed from the punch gang 22 and placed on the guide plate in front of the eyeleter gang 76 with its left side against the appropriate side guide 162; The document is pushed forward between the anvils 84 and plungers 86 of the eyeleters 78 until the eyeleter stops and the eyeleter pressure switch 174 are met, therebyclosing the eyeleter switch 174. At this time the notch (not shown) on the timer disc 178 mounted on the driven shaft 128 of the speed reduction unit 72 is opposite the timer switch 184' and hence the timer switch 184 is open.

'The operator then momentarily steps on the foot switch 176 until switch 184 is closed which does not energize the punch motor 16 as its pressure switch 172 is open but which does energize the contact solenoid 216' in the magnetic starter 214' thereby closing the contact 212 which in turn closes the power circuit to the eyeleter motor 70 and to the solenoid 200' of the solenoid brake 206. This energizes the eyeleter motor 70 and releases its solenoid brake 206 causing rotation through the eyeleter speed reduction unit 72 of the free wheeling clutch 110 pulling the eyeleter linkage 74 downward setting and crimping eyelets in the document. Starting the eyeleter motor 70 initiates rotation of the timer disc 178' bringing the unnotched portion of the timer disc 178' opposite the timer switch 184' closing this timer sw tch 184'. The timer switch 184' is an interlocking switch which when closed keeps the contact solenoid 216' energized and the contact 212' closed thereby keeping the power circuit to the eyeleter motor 70 closed even after the foot switch 176 is opened since the foot switch 176 is closed only when it is depressed and it is normally depressed only momentarily. Closing the timer switch 184 keeps the eyeleter motor 70 energized because the timer switch 184' is electrically connected to the power branch lead 213 through lead 215 and to one side of the contact solenoid 216' through lead 217' and is in parallel with the foot switch 176 and the pressure switch 174. This provides an electrical interlock to the contact solenoid 216' when the foot switch 176 is opened after having been momentarily closed.

During the downward movement of the eyeleter linkage 74 the resilient connection 104 automatically adjusts the crimping movement of the plungers 86 to the thickness of the document since downward movement of rod 92 stops when the eyelets are firmly set, after which further downward movement of rod 108 and housing 112 merely compresses resilient element 118.

After the pitman arm 108 attached to the driven plate 136 of the free wheeling clutch 110 has moved approximately 270 degrees from the vertical it is released from the drive plate 134 through the action of the trip arm 159 allowing the tension spring 151 to pull the linkage 74 rapidly upward during the last half of the cocking stroke of the eyeleters 78 permitting free and rapid upward movement of the spring loaded movement of the spring loaded actuating levers 80 of the eyeleters 78 during this part of the cocking stroke thereby jarring the chutes thus aiding in feeding additional eyelets 82 to the punches 86 of the eyeleters 78. The driven plate 136 is then stopped when the driven block 138 encounters the stop block 142 and thus prevents movement of the driven block 138 past the vertical position until the stop block 142 is advanced (FIGURE 15). When the drive plate 134 has completed a single revolution and the eyeleter gang 76 is in open position, the timer disc 178' has made one complete revolution bringing the notch in the timer disc 178 opposite the timer switch 184' thereby opening the timer switch 184. This opening of the timer switch 184 de-energizes the contact solenoid 216' if the foot switch 176, as is normal, has been opened by removal of the operators foot prior to this time. De-energizing the contact solenoid 216' opens the contact 212 and deenergizes the eyeleter motor 70 stopping movement of the drive plate 134. Simultaneously with the de-energization of the eyeleter motor 70 by the opening of the contact 212 the same opening of the contact 212' de-energizes the solenoid 200' of the solenoid brake 206 causing the solenoid brake 206 to stop further movement of the eyeleter motor 70 and hence of the eyeleter gang 76.

If desired, both the punch assembly and the eyeleter assembly 12 may be operated simultaneously by having documents in the punch gang 22 and the eyeleter gang 76 against the respective pressure switches 172 and 174 so that stepping on the foot switch 176 will operate both assemblies simultaneously.

In the normal operation of the eyeleter assembly 12 the operator holds his foot on the foot switch 176 only until the timer switch 184 is closed as previously discussed. However, if desired, the foot switch 176 may be held closed throughout the operation and the assembly 12 controlled entirely by the operation of the pressure switch 174. Thus assuming that the foot switch 176 is closed, and held closed, the insertion of a document into the eyeleter and against the pressure switch 174 closes the eyeleter switch 174 which energizes the contact solenoid 216' in the magnetic starter 214' thereby closing the contact 212' which in turn closes the power circuit to the eyeleter motor 70 and to the solenoid 200' of the solenoid brake 206.

.This energizes the eyeleter motor 70 and releases its solenoid brake 206 causing a downward setting and crimping of eyelets in the document as previously described. And as previously described the starting of the eyeleter motor 70 initiates rotation of the timer disc 178 bringing the unnotched portion of the timer disc 17 8 opposite the timer switch 184 and thus closing timer switch 184' and maintaining it closed so long as the timer disk follower remains out of the notched portion of the timer disk 178'. However, in order to start and stop the eyeleter assembly 12 satisfactorily solely by the insertion and removal of the document from the pressure switch 174 it is necessary that the document be removed between the time that the rivet setting punches rise above the document and the time that the timer disc 178' has made one complete revolution to bring the notch in the timer disc 17 8 opposite the timer switch 184 thereby opening the timer switch 184'. Thus,

assuming that the eyeleter gang has set the eyelets and rises above the document and the document has been removed promptly thereafter, the timer switch 184' will be opened on the completion of one revolution of the timer disc 178'. This opening of the timer switch 184' deenergizes the contact solenoid 216' because the eyeleter pressure switch 174 has been opened by the prior removal of the document of the pressure switch 174. De-energizing the contact solenoid 216' permits the contact 212 to open, which deenergizes the eyeleter motor 70 and the brake solenoid 200'. Deenergizing brake solenoid 200' causes brake 206 to be activated, thus stopping movement of the drive plate 134 as in the previous operation.

Similarly, this type of operation is also applicable to the punch assembly 10. That is, the operator in the normal operation of the punch assembly holds his foot on the foot switch 17 6 only until the timer switch 184 is closed. However, similarly to the operation of eyeleter assembly 12 by the pressure switch 174 as just described, the punch assembly 10 can be operated with the foot switch 176 held closed and the punch assembly 10 controlled entirely by the operation of the pressure switch 172. In that event the punch motor 16 is electrically powered and controlled by the operation of pressure switch 172 similar to the operation of the eyeleter motor 70 by the pressure switch 174. In the punch circuit, components are given the same, but unprimed, numbers as like components of the eyeleter circuit with the exception that the punch brake is numbered 188.

Occasionally an eyelet 82 may fail to be fed into the hole punched in the document and in such instance the operator may set an eyelet manually by depressing the actuating lever of the particular eyeleter 78 that failed to set the eyelet. This is permitted because the cables 92 connected to the actuating levers 80- are depressible elements due to their flexibility.

The present invention, therefore, is well suited to carry out the objects and attain the advantages mentioned as well as others inherent therein. Changes in details and rearrangements of parts will adjust themselves to those skilled in the art and accordingly it is desired to be limited only by the spirit of the invention as defined by the scope of the appended claims.

What is claimed is:

'1. An eyeleter apparatus for binding paper comprising, an eyeleter assembly including an electric motor, lever actuated eyeleter means provided with resilient means for moving the eyeleter means through its cocking stroke, a speed reduction unit driven by the motor, timing means associated with the speed reduction unit, free wheeling clutch means driven by the speed reduction unit said clutch means being free wheeling during the latter part of the cocking stroke of the eyeleter means, and linkage transmitting reciprocating motion to the eyeleter means fi'om the clutch means; a solenoid operated brake connected to the motor so constructed and arranged to be disengaged when the motor is energized and engaged when the motor is de-energized; and an electric power and control system'for'said motor including a main control cirouitfor said motor, a pressure switch in the main control circuit for energizing the motor when pressure is applied to the pressure switch, an auxiliary control circuit electrically connected in the control system, and a timing switch in the auxiliary control circuit operable by the timing means and continuing energization of the motor originally energized through the pressure switch, such timing switch opening the auxiliary control circuit at the completion of one cycle of operation of theeyeleter means whereby such means may be stopped at the end of each cycle of operation.

2. The invention of claim 1 in which the linkage contains depressible elements connected to the eyeleter means whereby said eyeleter means may be hand operated.

3. The invention of claim 2 in which the linkage includes a resilient connection whereby setting of eyelets in various thicknesses of paper is compensated for.

4. The invention of claim 2 in which the linkage includes springmeans moving the linkage toward the eyeleter means during the free wheeling of the clutch means and in which the clutch means includes a rotatable drive member driven by the speed reduction unit, a rotatable driven member actuating the linkage, and latch means connecting the two members during setting of the eyelets and being disconnected during at least the latter part of the cocking stroke whereby the clutch means is free wheeling during such disconnection.

'5. The invention of claim 1 in which the linkage includes aresilient connection whereby setting of eyelets in various thicknesses of paper is compensated for.

6. The invention of claim 1 in which the linkage includes spring means moving the linkage toward the eyeleter means during the free wheeling of the clutch means and in which the clutch means includes a rotatable'drive member driven by the speed reduction unit, a rotatable driven member actuating the linkage, and latch means connecting the two members during setting of the eye- Iets and being disconnected during at least the latter part of the cocking stroke whereby the clutch means is free wheeling during such disconnection.

8. eyeleter apparatus for binding paper comprising, an. eyeleter assembly including electric motor, lever actuated eyeleter means for setting. an eyelet on movement of the lever in one direction and cocking upon movement in the other direction, said eyeleter means being provided with resilient means moving the eyeleter means through its cocking stroke, a speed reduction unit driven by the motor, timing means associatedwith the speed reduction unit, free wheeling clutch means driven by the speed reduction unit, said clutch means being free wheeling during the latter part of the cocking stroke of the eyeleter means, and linkage transmitting reciprocating motion to the eyeleter means from the clutch means; and an electric power andcontrol system for said motor including a main and an auxiliary control circuit for the motor, pressure switch means in the main control circuit energizing the motor when pressure is applied to the pressure switch means, and a timing switch in the auxiliary control circuit operable by the timing means and continuing energization of the motor originally energized through the pressure switch means, suchtiming' switch opening said auxiliary control circuit of said control system at the completion of each cycle of operation of the eyeleter means. V

9. The invention of claim 8 in which the linkage contains depressible elements connected to the eyeleter means whereby said eyeleter may be hand operated.

10. The invention of claim 8 in which the linkage includes a resilient connection whereby setting of eyeleter in various thicknesses of paper is compensated for.

11. The invention of claim 8 in which the linkage includes spring means moving the linkage toward the eyeleter means during the free Wheeling of the clutch means and in which the clutch means includes a rotatable drive member driven by the speed reduction unit, a rotatable driven member actuating the linkage, and latch means connecting the two members during setting of'the eyelets and being disconnected during at least the latter part of the cocking stroke, whereby the clutch means is free wheeling during such disconnection.

I References Cited in the file of this patent UNITED'STATES PATENTS 

